Variable expansion frame system for deploying medical devices and methods of use
First Claim
1. A method for deploying a medial device within a body, comprising the steps of:
- introducing an expansion frame into a blood vessel within the body of a patient, the expansion frame comprising an outer wire, an inner wire, and a substantially circular frame attached at a first point to a distal end of the outer wire, and attached at a second point to a distal end of the inner wire, the inner wire slideable relative to the outer wire;
advancing the expansion frame to a region of interest; and
retracting a proximal end of the outer wire relative to a proximal end of the inner wire, wherein the circular frame rotates about an axis perpendicular to the line defined by the first and second point, and the circular frame thereby circumferentially engages the luminal wall.
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Accused Products
Abstract
An expansion frame system for deploying medical devices in a patient'"'"'s body cavity. The system typically includes an inner wire disposed within a lumen of an outer wire. Distal ends of the inner and outer wires are attached to a substantially circular frame at first and second points. During use, the outer wire is displaced relative to the inner wire, causing the circular frame to rotate about an axis perpendicular to the line defined by the first and second points. Medical devices, such as a filter, a stent, an occluder or a manometer, can be mounted on the circular frame. The diameter of the expansion frame can be varied to achieve optimal contact with the luminal wall of the body cavity. Methods of using the expansion frame system for temporary or permanent placement of a medical device is disclosed.
209 Citations
23 Claims
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1. A method for deploying a medial device within a body, comprising the steps of:
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introducing an expansion frame into a blood vessel within the body of a patient, the expansion frame comprising an outer wire, an inner wire, and a substantially circular frame attached at a first point to a distal end of the outer wire, and attached at a second point to a distal end of the inner wire, the inner wire slideable relative to the outer wire;
advancing the expansion frame to a region of interest; and
retracting a proximal end of the outer wire relative to a proximal end of the inner wire, wherein the circular frame rotates about an axis perpendicular to the line defined by the first and second point, and the circular frame thereby circumferentially engages the luminal wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
a self-expanding stent disposed about the outer wire.
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19. The method of claim 1, wherein the step of introducing the expansion frame into the vessel comprises advancing the expansion frame through an introducer.
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20. The method of claim 19, wherein the introducer comprises a cannula.
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21. The method of claim 19, wherein the introducer is a port on a cannula.
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22. The method of claim 21, wherein the port is separate from a lumen of the cannula.
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23. The method of claim 1, wherein the inner wire is disposed within the lumen of the outer wire.
Specification